Update copyright dates with scripts/update-copyrights

I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master

17 files changed, 17 insertions, 17 deletions

diff --git a/sysdeps/htl/bits/cancelation.h b/sysdeps/htl/bits/cancelation.h
index b727663e7c..5ded0de141 100644
--- a/sysdeps/htl/bits/cancelation.h
+++ b/sysdeps/htl/bits/cancelation.h
@@ -1,5 +1,5 @@
 /* Cancelation.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/pthread-np.h b/sysdeps/htl/bits/pthread-np.h
index 8c7dc4e104..4eb79bb406 100644
--- a/sysdeps/htl/bits/pthread-np.h
+++ b/sysdeps/htl/bits/pthread-np.h
@@ -1,5 +1,5 @@
 /* Non-portable functions. Generic version.
-   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/pthread.h b/sysdeps/htl/bits/pthread.h
index bedb815108..63dce24889 100644
--- a/sysdeps/htl/bits/pthread.h
+++ b/sysdeps/htl/bits/pthread.h
@@ -1,5 +1,5 @@
 /* Pthread data structures.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/pthreadtypes.h b/sysdeps/htl/bits/pthreadtypes.h
index 8e49231601..74127aea48 100644
--- a/sysdeps/htl/bits/pthreadtypes.h
+++ b/sysdeps/htl/bits/pthreadtypes.h
@@ -1,5 +1,5 @@
 /* Declaration of common pthread types for all architectures.  Hurd version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/semaphore.h b/sysdeps/htl/bits/semaphore.h
index 77a2be13d3..7c109a4f2a 100644
--- a/sysdeps/htl/bits/semaphore.h
+++ b/sysdeps/htl/bits/semaphore.h
@@ -1,5 +1,5 @@
 /* Semaphore type.  Generic version.
-   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/thread-shared-types.h b/sysdeps/htl/bits/thread-shared-types.h
index 819682a07b..9088377d22 100644
--- a/sysdeps/htl/bits/thread-shared-types.h
+++ b/sysdeps/htl/bits/thread-shared-types.h
@@ -1,5 +1,5 @@
 /* Common threading primitives definitions for both POSIX and C11.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/__pthread_key.h b/sysdeps/htl/bits/types/__pthread_key.h
index 2c5998c50d..86b89d5c88 100644
--- a/sysdeps/htl/bits/types/__pthread_key.h
+++ b/sysdeps/htl/bits/types/__pthread_key.h
@@ -1,5 +1,5 @@
 /* Thread specific data.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_attr.h b/sysdeps/htl/bits/types/struct___pthread_attr.h
index 482e10b254..1877ad8ec8 100644
--- a/sysdeps/htl/bits/types/struct___pthread_attr.h
+++ b/sysdeps/htl/bits/types/struct___pthread_attr.h
@@ -1,5 +1,5 @@
 /* Thread attribute type.  Generic version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_barrier.h b/sysdeps/htl/bits/types/struct___pthread_barrier.h
index 8b18235320..a009b1f264 100644
--- a/sysdeps/htl/bits/types/struct___pthread_barrier.h
+++ b/sysdeps/htl/bits/types/struct___pthread_barrier.h
@@ -1,5 +1,5 @@
 /* Thread barrier attribute type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_barrierattr.h b/sysdeps/htl/bits/types/struct___pthread_barrierattr.h
index 05b7c72b0b..5692f88433 100644
--- a/sysdeps/htl/bits/types/struct___pthread_barrierattr.h
+++ b/sysdeps/htl/bits/types/struct___pthread_barrierattr.h
@@ -1,5 +1,5 @@
 /* Thread barrier attribute type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_cond.h b/sysdeps/htl/bits/types/struct___pthread_cond.h
index c040b171ac..34f74ddb27 100644
--- a/sysdeps/htl/bits/types/struct___pthread_cond.h
+++ b/sysdeps/htl/bits/types/struct___pthread_cond.h
@@ -1,5 +1,5 @@
 /* Condition type.  Generic version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_condattr.h b/sysdeps/htl/bits/types/struct___pthread_condattr.h
index fee382b5c7..656ae140fd 100644
--- a/sysdeps/htl/bits/types/struct___pthread_condattr.h
+++ b/sysdeps/htl/bits/types/struct___pthread_condattr.h
@@ -1,5 +1,5 @@
 /* Condition attribute type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_mutex.h b/sysdeps/htl/bits/types/struct___pthread_mutex.h
index b263c13edf..dba8468f90 100644
--- a/sysdeps/htl/bits/types/struct___pthread_mutex.h
+++ b/sysdeps/htl/bits/types/struct___pthread_mutex.h
@@ -1,6 +1,6 @@
 /* Mutex type.  Generic version.
 
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_mutexattr.h b/sysdeps/htl/bits/types/struct___pthread_mutexattr.h
index b3f6ebdf68..e40264e985 100644
--- a/sysdeps/htl/bits/types/struct___pthread_mutexattr.h
+++ b/sysdeps/htl/bits/types/struct___pthread_mutexattr.h
@@ -1,5 +1,5 @@
 /* Mutex attribute type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_once.h b/sysdeps/htl/bits/types/struct___pthread_once.h
index a6b6db708c..de4cab100e 100644
--- a/sysdeps/htl/bits/types/struct___pthread_once.h
+++ b/sysdeps/htl/bits/types/struct___pthread_once.h
@@ -1,5 +1,5 @@
 /* Dynamic package initialization data structures.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_rwlock.h b/sysdeps/htl/bits/types/struct___pthread_rwlock.h
index 24939fd471..0623db6d98 100644
--- a/sysdeps/htl/bits/types/struct___pthread_rwlock.h
+++ b/sysdeps/htl/bits/types/struct___pthread_rwlock.h
@@ -1,5 +1,5 @@
 /* rwlock type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/htl/bits/types/struct___pthread_rwlockattr.h b/sysdeps/htl/bits/types/struct___pthread_rwlockattr.h
index 01f2d55db8..15db492ea3 100644
--- a/sysdeps/htl/bits/types/struct___pthread_rwlockattr.h
+++ b/sysdeps/htl/bits/types/struct___pthread_rwlockattr.h
@@ -1,5 +1,5 @@
 /* Thread rwlock attribute type.  Generic version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or